That's kinda funny, I ordered a 750 annular Proform main body a couple years ago to build one from scratch and it had QFT where yours says Proform. Not surprising, they have been partnered for a while now....I never trust anything out of the box, so I surfaced all the faces of the main body to get them flat and smooth and gave it the usual blueprinting with thread chasing, chamfering etc. I was a little surprised I used a billet baseplate from Allstate, the Proform main body, leftover billet metering blocks from a Demon, Proform bowls, and all the other needed hardware from Allstate. I even used the main jets supplied with the main body and found they were spot on for me. Couldn't have been more happy how well it ran for a mix of parts.